Regalis
496 lines
20 KiB
C#
496 lines
20 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Net;
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using System.Text;
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using Lidgren.Network;
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using Facepunch.Steamworks;
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using Barotrauma.Steam;
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using System.Linq;
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using System.Threading;
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namespace Barotrauma.Networking
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{
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class SteamP2POwnerPeer : ClientPeer
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{
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private bool isActive;
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private NetClient netClient;
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private NetPeerConfiguration netPeerConfiguration;
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private ConnectionInitialization initializationStep;
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private UInt64 selfSteamID;
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List<NetIncomingMessage> incomingLidgrenMessages;
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class RemotePeer
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{
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public UInt64 SteamID;
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public double? DisconnectTime;
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public bool Authenticating;
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public bool Authenticated;
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public List<Pair<NetDeliveryMethod, NetOutgoingMessage>> UnauthedMessages;
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public RemotePeer(UInt64 steamId)
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{
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SteamID = steamId;
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DisconnectTime = null;
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Authenticating = false;
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Authenticated = false;
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UnauthedMessages = new List<Pair<NetDeliveryMethod, NetOutgoingMessage>>();
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}
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}
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List<RemotePeer> remotePeers;
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public SteamP2POwnerPeer(string name)
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{
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ServerConnection = null;
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Name = name;
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netClient = null;
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isActive = false;
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selfSteamID = Steam.SteamManager.GetSteamID();
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}
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public override void Start(object endPoint, int ownerKey)
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{
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if (isActive) { return; }
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netPeerConfiguration = new NetPeerConfiguration("barotrauma");
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netPeerConfiguration.DisableMessageType(NetIncomingMessageType.DebugMessage | NetIncomingMessageType.WarningMessage | NetIncomingMessageType.Receipt
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| NetIncomingMessageType.ErrorMessage | NetIncomingMessageType.Error);
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netClient = new NetClient(netPeerConfiguration);
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incomingLidgrenMessages = new List<NetIncomingMessage>();
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initializationStep = ConnectionInitialization.SteamTicketAndVersion;
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IPEndPoint ipEndPoint = new IPEndPoint(IPAddress.Loopback, Steam.SteamManager.STEAMP2P_OWNER_PORT);
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netClient.Start();
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ServerConnection = new LidgrenConnection("Server", netClient.Connect(ipEndPoint), 0);
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ServerConnection.Status = NetworkConnectionStatus.Connected;
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remotePeers = new List<RemotePeer>();
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Steam.SteamManager.Instance.Networking.OnIncomingConnection = OnIncomingConnection;
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Steam.SteamManager.Instance.Networking.OnP2PData = OnP2PData;
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Steam.SteamManager.Instance.Networking.SetListenChannel(0, true);
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Steam.SteamManager.Instance.Auth.OnAuthChange = OnAuthChange;
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isActive = true;
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}
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private void OnAuthChange(ulong steamID, ulong ownerID, ClientAuthStatus status)
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{
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RemotePeer remotePeer = remotePeers.Find(p => p.SteamID == steamID);
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DebugConsole.Log(steamID + " validation: " + status + ", " + (remotePeer != null));
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if (remotePeer == null) { return; }
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if (remotePeer.Authenticated)
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{
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if (status != ClientAuthStatus.OK)
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{
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DisconnectPeer(remotePeer, DisconnectReason.SteamAuthenticationFailed.ToString() + "/ Steam authentication status changed: " + status.ToString());
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}
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return;
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}
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if (status == ClientAuthStatus.OK)
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{
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remotePeer.Authenticated = true;
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remotePeer.Authenticating = false;
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foreach (var msg in remotePeer.UnauthedMessages)
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{
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NetSendResult result = netClient.SendMessage(msg.Second, msg.First);
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if (result != NetSendResult.Queued && result != NetSendResult.Sent)
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{
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DebugConsole.NewMessage("Failed to send unauthed message to host: " + result);
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}
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}
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remotePeer.UnauthedMessages.Clear();
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}
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else
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{
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DisconnectPeer(remotePeer, DisconnectReason.SteamAuthenticationFailed.ToString() + "/ Steam authentication failed: " + status.ToString());
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return;
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}
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}
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private bool OnIncomingConnection(UInt64 steamId)
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{
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if (!isActive) { return false; }
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if (!remotePeers.Any(p => p.SteamID == steamId))
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{
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remotePeers.Add(new RemotePeer(steamId));
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}
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return true; //accept all connections, the server will figure things out later
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}
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private void OnP2PData(ulong steamId, byte[] data, int dataLength, int channel)
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{
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if (!isActive) { return; }
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RemotePeer remotePeer = remotePeers.Find(p => p.SteamID == steamId);
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if (remotePeer == null || remotePeer.DisconnectTime != null)
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{
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return;
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}
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NetOutgoingMessage outMsg = netClient.CreateMessage();
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outMsg.Write(steamId);
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outMsg.Write(data, 1, dataLength - 1);
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NetDeliveryMethod lidgrenDeliveryMethod = NetDeliveryMethod.Unreliable;
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switch ((DeliveryMethod)data[0])
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{
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case DeliveryMethod.Unreliable:
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lidgrenDeliveryMethod = NetDeliveryMethod.Unreliable;
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break;
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case DeliveryMethod.Reliable:
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lidgrenDeliveryMethod = NetDeliveryMethod.ReliableUnordered;
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break;
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case DeliveryMethod.ReliableOrdered:
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lidgrenDeliveryMethod = NetDeliveryMethod.ReliableOrdered;
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break;
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}
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byte incByte = data[1];
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bool isCompressed = (incByte & (byte)PacketHeader.IsCompressed) != 0;
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bool isConnectionInitializationStep = (incByte & (byte)PacketHeader.IsConnectionInitializationStep) != 0;
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bool isDisconnectMessage = (incByte & (byte)PacketHeader.IsDisconnectMessage) != 0;
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bool isServerMessage = (incByte & (byte)PacketHeader.IsServerMessage) != 0;
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bool isHeartbeatMessage = (incByte & (byte)PacketHeader.IsHeartbeatMessage) != 0;
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if (!remotePeer.Authenticated)
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{
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if (!remotePeer.Authenticating)
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{
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if (isConnectionInitializationStep)
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{
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remotePeer.DisconnectTime = null;
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IReadMessage authMsg = new ReadOnlyMessage(data, isCompressed, 2, dataLength - 2, null);
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ConnectionInitialization initializationStep = (ConnectionInitialization)authMsg.ReadByte();
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if (initializationStep == ConnectionInitialization.SteamTicketAndVersion)
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{
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remotePeer.Authenticating = true;
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authMsg.ReadString(); //skip name
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authMsg.ReadUInt64(); //skip steamid
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UInt16 ticketLength = authMsg.ReadUInt16();
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byte[] ticket = authMsg.ReadBytes(ticketLength);
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ClientStartAuthSessionResult authSessionStartState = Steam.SteamManager.StartAuthSession(ticket, steamId);
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if (authSessionStartState != ClientStartAuthSessionResult.OK)
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{
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DisconnectPeer(remotePeer, DisconnectReason.SteamAuthenticationFailed.ToString() + "/ Steam auth session failed to start: " + authSessionStartState.ToString());
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return;
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}
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}
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}
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}
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}
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if (remotePeer.Authenticating)
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{
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remotePeer.UnauthedMessages.Add(new Pair<NetDeliveryMethod, NetOutgoingMessage>(lidgrenDeliveryMethod, outMsg));
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}
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else
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{
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NetSendResult result = netClient.SendMessage(outMsg, lidgrenDeliveryMethod);
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if (result != NetSendResult.Queued && result != NetSendResult.Sent)
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{
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DebugConsole.NewMessage("Failed to send message from "+SteamManager.SteamIDUInt64ToString(remotePeer.SteamID)+" to host: " + result);
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}
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}
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}
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public override void Update(float deltaTime)
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{
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if (!isActive) { return; }
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for (int i = remotePeers.Count - 1; i >= 0; i--)
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{
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if (remotePeers[i].DisconnectTime != null && remotePeers[i].DisconnectTime < Timing.TotalTime)
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{
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ClosePeerSession(remotePeers[i]);
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}
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}
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netClient.ReadMessages(incomingLidgrenMessages);
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foreach (NetIncomingMessage inc in incomingLidgrenMessages)
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{
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if (inc.SenderConnection != (ServerConnection as LidgrenConnection).NetConnection) { continue; }
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switch (inc.MessageType)
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{
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case NetIncomingMessageType.Data:
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HandleDataMessage(inc);
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break;
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case NetIncomingMessageType.StatusChanged:
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HandleStatusChanged(inc);
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break;
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}
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}
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incomingLidgrenMessages.Clear();
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}
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private void HandleDataMessage(NetIncomingMessage inc)
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{
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if (!isActive) { return; }
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UInt64 recipientSteamId = inc.ReadUInt64();
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int p2pDataStart = inc.PositionInBytes;
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byte incByte = inc.ReadByte();
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bool isCompressed = (incByte & (byte)PacketHeader.IsCompressed) != 0;
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bool isConnectionInitializationStep = (incByte & (byte)PacketHeader.IsConnectionInitializationStep) != 0;
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bool isDisconnectMessage = (incByte & (byte)PacketHeader.IsDisconnectMessage) != 0;
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bool isServerMessage = (incByte & (byte)PacketHeader.IsServerMessage) != 0;
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bool isHeartbeatMessage = (incByte & (byte)PacketHeader.IsHeartbeatMessage) != 0;
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if (recipientSteamId != selfSteamID)
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{
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if (!isServerMessage)
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{
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DebugConsole.ThrowError("Received non-server message meant for remote peer");
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return;
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}
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RemotePeer peer = remotePeers.Find(p => p.SteamID == recipientSteamId);
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if (peer == null) { return; }
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if (isDisconnectMessage)
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{
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DisconnectPeer(peer, inc.ReadString());
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return;
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}
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Facepunch.Steamworks.Networking.SendType sendType;
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switch (inc.DeliveryMethod)
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{
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case NetDeliveryMethod.ReliableUnordered:
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case NetDeliveryMethod.ReliableSequenced:
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case NetDeliveryMethod.ReliableOrdered:
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//the documentation seems to suggest that the Reliable send type
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//enforces packet order (TODO: verify)
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sendType = Facepunch.Steamworks.Networking.SendType.Reliable;
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break;
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default:
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sendType = Facepunch.Steamworks.Networking.SendType.Unreliable;
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break;
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}
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byte[] p2pData;
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if (isConnectionInitializationStep)
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{
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p2pData = new byte[inc.LengthBytes - p2pDataStart + 8];
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p2pData[0] = inc.Data[p2pDataStart];
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Lidgren.Network.NetBitWriter.WriteUInt64(Steam.SteamManager.Instance.Lobby.CurrentLobby, 64, p2pData, 8);
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Array.Copy(inc.Data, p2pDataStart+1, p2pData, 9, inc.LengthBytes - p2pDataStart - 1);
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}
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else
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{
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p2pData = new byte[inc.LengthBytes - p2pDataStart];
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Array.Copy(inc.Data, p2pDataStart, p2pData, 0, p2pData.Length);
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}
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if (p2pData.Length + 4 >= MsgConstants.MTU)
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{
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DebugConsole.Log("WARNING: message length comes close to exceeding MTU, forcing reliable send (" + p2pData.Length.ToString() + " bytes)");
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sendType = Facepunch.Steamworks.Networking.SendType.Reliable;
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}
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bool successSend = Steam.SteamManager.Instance.Networking.SendP2PPacket(recipientSteamId, p2pData, p2pData.Length, sendType);
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if (!successSend)
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{
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if (sendType != Facepunch.Steamworks.Networking.SendType.Reliable)
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{
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DebugConsole.Log("WARNING: message couldn't be sent unreliably, forcing reliable send (" + p2pData.Length.ToString() + " bytes)");
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sendType = Facepunch.Steamworks.Networking.SendType.Reliable;
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successSend = Steam.SteamManager.Instance.Networking.SendP2PPacket(recipientSteamId, p2pData, p2pData.Length, sendType);
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}
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if (!successSend)
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{
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DebugConsole.ThrowError("Failed to send message to remote peer! (" + p2pData.Length.ToString() + " bytes)");
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}
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}
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}
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else
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{
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if (isDisconnectMessage)
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{
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DebugConsole.ThrowError("Received disconnect message from owned server");
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return;
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}
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if (!isServerMessage)
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{
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DebugConsole.ThrowError("Received non-server message from owned server");
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return;
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}
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if (isHeartbeatMessage)
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{
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return; //timeout is handled by Lidgren, ignore this message
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}
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if (isConnectionInitializationStep)
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{
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NetOutgoingMessage outMsg = netClient.CreateMessage();
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outMsg.Write(selfSteamID);
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outMsg.Write((byte)(PacketHeader.IsConnectionInitializationStep));
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outMsg.Write(Name);
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NetSendResult result = netClient.SendMessage(outMsg, NetDeliveryMethod.ReliableUnordered);
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if (result != NetSendResult.Queued && result != NetSendResult.Sent)
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{
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DebugConsole.NewMessage("Failed to send initialization message to host: " + result);
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}
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return;
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}
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else
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{
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if (initializationStep != ConnectionInitialization.Success)
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{
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OnInitializationComplete?.Invoke();
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initializationStep = ConnectionInitialization.Success;
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}
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UInt16 length = inc.ReadUInt16();
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IReadMessage msg = new ReadOnlyMessage(inc.Data, isCompressed, inc.PositionInBytes, length, ServerConnection);
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OnMessageReceived?.Invoke(msg);
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return;
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}
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}
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}
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private void DisconnectPeer(RemotePeer peer, string msg)
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{
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if (!string.IsNullOrWhiteSpace(msg))
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{
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if (peer.DisconnectTime == null)
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{
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peer.DisconnectTime = Timing.TotalTime + 1.0;
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}
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IWriteMessage outMsg = new WriteOnlyMessage();
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outMsg.Write((byte)(PacketHeader.IsServerMessage | PacketHeader.IsDisconnectMessage));
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outMsg.Write(msg);
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Steam.SteamManager.Instance.Networking.SendP2PPacket(peer.SteamID, outMsg.Buffer, outMsg.LengthBytes,
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Facepunch.Steamworks.Networking.SendType.Reliable);
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}
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else
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{
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ClosePeerSession(peer);
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}
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}
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private void ClosePeerSession(RemotePeer peer)
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{
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Steam.SteamManager.Instance.Networking.CloseSession(peer.SteamID);
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remotePeers.Remove(peer);
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}
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private void HandleStatusChanged(NetIncomingMessage inc)
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{
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if (!isActive) { return; }
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NetConnectionStatus status = (NetConnectionStatus)inc.ReadByte();
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switch (status)
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{
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case NetConnectionStatus.Disconnected:
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string disconnectMsg = inc.ReadString();
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Close(disconnectMsg);
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OnDisconnectMessageReceived?.Invoke(disconnectMsg);
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break;
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}
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}
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public override void SendPassword(string password)
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{
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return; //owner doesn't send passwords
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}
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public override void Close(string msg = null)
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{
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if (!isActive) { return; }
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isActive = false;
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for (int i = remotePeers.Count - 1; i >= 0; i--)
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{
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DisconnectPeer(remotePeers[i], msg ?? DisconnectReason.ServerShutdown.ToString());
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}
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Thread.Sleep(100);
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for (int i = remotePeers.Count - 1; i >= 0; i--)
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{
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ClosePeerSession(remotePeers[i]);
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}
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netClient.Shutdown(msg ?? TextManager.Get("Disconnecting"));
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netClient = null;
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OnDisconnect?.Invoke();
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Steam.SteamManager.Instance.Networking.OnIncomingConnection = null;
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Steam.SteamManager.Instance.Networking.OnP2PData = null;
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Steam.SteamManager.Instance.Networking.SetListenChannel(0, false);
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Steam.SteamManager.Instance.Auth.OnAuthChange = null;
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}
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public override void Send(IWriteMessage msg, DeliveryMethod deliveryMethod)
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{
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if (!isActive) { return; }
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NetDeliveryMethod lidgrenDeliveryMethod = NetDeliveryMethod.Unreliable;
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switch (deliveryMethod)
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{
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case DeliveryMethod.Unreliable:
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lidgrenDeliveryMethod = NetDeliveryMethod.Unreliable;
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break;
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case DeliveryMethod.Reliable:
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lidgrenDeliveryMethod = NetDeliveryMethod.ReliableUnordered;
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break;
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case DeliveryMethod.ReliableOrdered:
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lidgrenDeliveryMethod = NetDeliveryMethod.ReliableOrdered;
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break;
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}
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NetOutgoingMessage lidgrenMsg = netClient.CreateMessage();
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byte[] msgData = new byte[msg.LengthBytes];
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msg.PrepareForSending(ref msgData, out bool isCompressed, out int length);
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lidgrenMsg.Write(selfSteamID);
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lidgrenMsg.Write((byte)(isCompressed ? PacketHeader.IsCompressed : PacketHeader.None));
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lidgrenMsg.Write((UInt16)length);
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lidgrenMsg.Write(msgData, 0, length);
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#if DEBUG
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netPeerConfiguration.SimulatedDuplicatesChance = GameMain.Client.SimulatedDuplicatesChance;
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netPeerConfiguration.SimulatedMinimumLatency = GameMain.Client.SimulatedMinimumLatency;
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netPeerConfiguration.SimulatedRandomLatency = GameMain.Client.SimulatedRandomLatency;
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netPeerConfiguration.SimulatedLoss = GameMain.Client.SimulatedLoss;
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#endif
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NetSendResult result = netClient.SendMessage(lidgrenMsg, lidgrenDeliveryMethod);
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if (result != NetSendResult.Queued && result != NetSendResult.Sent)
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{
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DebugConsole.NewMessage("Failed to send own message to host: " + result);
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}
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}
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}
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}
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